Question

Why is AC power used instead of DC?

Answer 1

AC power is used instead of DC because of:

1. Production of AC is less expensive than DC power.
2. AC power can easily be step-up or step down with the help of a transformer which is not possible in the case of DC power.
3. Electricity that is coming to our homes is AC because it comes from a far away power generation plant so the loss of energy during transmission is very less in the case of AC power than DC power.
4. Peak current value of AC is more than DC.
5. Most of our household appliances are inductive type. For these appliances if we use DC current then they will not work properly, that is why we use AC current for homes, offices, etc.

Thus AC is used instead of DC.